Wrap delegate and undelegate

[84564221]

Check whether Backbone.utils.delegate or Backbone.utils.undelegate are functions

See paulmillr/exoskeleton#87

[akre54]

Try Backbone.utils?.delegate(this, eventName, ...) or Backbone.utils?.delegate?(this, eventName, ...)

[84564221]

@akre54 What do you mean exactly by that?

[akre54]

The coffeescript ? "soak" operator does this without the need to wrap everything in a _.isFunction test.

http://coffeescript.org/#try:Backbone.utils.delegate%3F(this%2C%20opts)

[akre54]

No need to close it. Just amend your pull request.

[84564221]

I have accidentally removed my fork